[m2e-users] M2Eclipse not handling generated sources properly

[Michael Moser]

Im my pom.xml there is a section re. generated resources (these are generated 
using the hibernate3-maven-plugin / v2.2).

        <plugin>

            <groupId>org.codehaus.mojo</groupId>

            <artifactId>build-helper-maven-plugin</artifactId>

            <version>1.7</version>

            <executions>

                <execution>

                    <id>add-source</id>

                    <phase>generate-sources</phase>

                    <goals>

                        <goal>add-source</goal>

                        <goal>add-test-source</goal>

                    </goals>

                    <configuration>

                        <sources>

                            <source>target/generated-sources</source>

                            <source>src/main/java</source>

                        </sources>

                    </configuration>

                </execution>

            </executions>

        </plugin>

In my understanding this should add "target/generated-sources" to the 
compilation source path, so that these files are also compiled and the 
generated class files end up in .../target/classes.

Now, after importing that project into Eclipse I find the below in the 
.classpath file:

<classpathentry kind="src" output="target/test-classes" 
path="target/generated-sources">

    <attributes>

        <attribute name="optional" value="true"/>

        <attribute name="maven.pomderived" value="true"/>

        <attribute name="test" value="true"/>

    </attributes>

</classpathentry>

Why does M2E consider these generated-sources as test-classes, i.e. puts them 
into the target/test-classes folder and marks that path with 'attribute 
name="test" value="true"' ??? Of course the compilation of dependent projects 
then invariably fails because imports of these generated classes can not be 
satisfied. :-( 

If I manually mangle the .classpath file and change the output path to 
'output="target/classes"' and remove the test-attribute, then things work fine. 
But shortly after Eclipse will mark my project faulty because it is out-of-sync 
with regards to the pom.xml and requires me to do a Maven -> Update project. 
But this changes things back to faulty and the compilation fails again. :-(( 

Is there anything wrong with the pom or is that a bug in M2E or how can I 
correct that situation?

 


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